Quantum Dot Waveguide Array for Broadband Light Sources
Year: 2025
Type: article
Abstract: In this paper, we demonstrate a broadband and simultaneous waveguide array light source based on water-soluble CdSe/ZnS quantum dots (QDs). We initially measure the fluorescence intensity for various cladding solution concentrations along the fiber axis to assess their impact on the propagation loss; the experimental results show that the fluorescent intensity decreases with fiber length, with higher concentrations showing a more pronounced decrease. Then, we showcase a synchronous QD light source in an optofluidic chip that fluoresces in red, green, and blue (RGB) within a microfluidic channel. Finally, a 3 × 3 QD array of a fluorescent display on a single PDMS chip is demonstrated. The QD waveguide represents a compact and stable structure that is readily manufacturable, making it an ideal light source for advancing high-throughput biochemical sensing and on-chip spectroscopic analysis.
Source: Photonics
Authors: Dongyang Li, Yufei Chu, Qingbo Xu, Dong Liu, Junying Ruan, Hao Sun, Jianwei Li, Chengde Guo, Xiaoyun Pu, Yuanxian Zhang
Institutions: Yunnan University, Stony Brook University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,896
Awards: G10907654, G7723117140
OpenAlex ID: W4408037782